Browsing by Author "Zhang, Zihang"

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    Bloch dynamics with second order Berry phase correction
    (2017-04-23) Lu, Jianfeng; Zhang, Zihang; Zhou, Zhennan
    We derive the semiclassical Bloch dynamics with the second order Berry phase correction, based on a two-scale WKB asymptotic analysis. For uniform external electric field, the bi-characteristics system after a positional shift introduced by Berry connections agrees with the recent result in the physics literature.